Answer:

Explanation:
The density formula is

Rearrange the formula for mass, m, by multiplying both sides of the equation by v.


The mass can be found by multiplying density and volume.
The density of the sugar is 1.59 grams per milliliter. The volume is 237 milliliters.

Substitute the values into the formula.

Multiply. Note that the milliliters, or mL will cancel each other out.


The mass is 376.83 grams.
It changes the chemical composition of the magnesium into something else (whitish substance)
What helps me to balance equations is to list the elements i have on each side of the equation, and use tally marks to see what I have and don't have. Then when I'm done balancing, I tally again to make sure everything matches up.
On the left side, you have 1 Al, and 2 O. On the right side, 1 Al and 3 O.
In order for the equation to balance, you need to place a 2 in front of the AlO on the right side. This would make the Al have 2 atoms and the O have six. On the left side, you need to place a 2 in front of the Al and a 3 in front of the O, making it six. Left side: 2 Al's 6 O's. Right side: 2 Al's and 6 O's. Matches!
Answer:
1 mole of aluminum must contain 6.022⋅1023 atoms of aluminium → this is known as Avogadro's constant.
Explanation: